Composition and organic insulator prepared using the same

Abstract

Disclosed are a composition including a silane-based organic/inorganic hybrid material having a multiple bond and one or more organic metal compounds and/or one or more organic polymers, an organic insulator including the composition, an organic thin film transistor (OTFT) including the organic insulator and an electronic device including the OTFT. The organic insulator including the composition for preparing an organic insulator has increased charge mobility and an increased on/off current ratio, thus exhibiting improved properties, and the organic thin film transistor manifests uniform properties due to the absence of hysteresis.

What is claimed is: 
     
       1. A composition for preparing an organic insulator, comprising:
 a silane-based organic/inorganic hybrid material having a multiple bond; and one or more organic metal compounds and one or more organic polymers, and 
 wherein the silane-based organic/inorganic hybrid material having a multiple bond is a compound represented by Formula 1 or 2 below, or an organic/inorganic hybrid resin obtained by subjecting a compound of Formula 1 or 2, or one or more selected from among materials of Formula 1 or 2 and a material of Formula 3, to hydrolysis and condensation using an acid catalyst or a base catalyst and water in presence of an organic solvent:
   A 1 SiX 1 X 2 X 3   Formula 1
 
 
 wherein A1 is an octenyl group or a C2˜30 alkynyl group, and X1, X2 and X3 are each independently a hydroxyl group, a halogen atom, or a C1˜5 alkoxy group;
   A 1 A 2 SiX 1 X 2   Formula 2
 
 
 wherein A1 and A2 each are a hexenyl group, an octenyl group, or a C2˜30 alkynyl group, and 
 X1 and X2 are each independently a hydroxyl group, a halogen atom, or a C1˜5 alkoxy group; and
   SiX 1 X 2 X 3 X 4   Formula 3
 
 
 wherein X1, X2, X3 and X4 are each independently a halogen atom, a hydroxyl group, or a C1˜5 alkoxy group. 
 
     
     
       2. The compound as set forth in  claim 1 , wherein the silane-based organic/inorganic hybrid material having a multiple bond is a resin represented by Formula 4 below:
 Formula 4 
 
       
         
           
           
               
               
           
         
         wherein A 1  and A 2  are each independently an octenyl group or a C2˜30 alkynyl group, 
         X 1  and X 2  are each independently a hydroxyl group, a halogen atom, or a C 1˜5  alkoxy group, and 
         where m is an integer from about 0 to about 1000. 
       
     
     
       3. The compound as set forth in  claim 1 , wherein the silane-based organic/inorganic hybrid material having a multiple bond is a material represented by Formulas 5 below: 
       
         
           
           
               
               
           
         
       
     
     
       4. The composition as set forth in  claim 1 , wherein the organic metal compound is selected from a group consisting of a titanium compound, a zirconium compound, a hafnium compound, an aluminum compound, and mixtures thereof. 
     
     
       5. The composition as set forth in  claim 4 , wherein the organic metal compound is selected from a group consisting of titanium (IV) n-butoxide, titanium (IV) t-butoxide, titanium (IV) ethoxide, titanium (IV) 2-ethylhexoxide, titanium (IV) iso-propoxide, titanium (IV) (di-iso-propoxide)bis(acetylacetonate), titanium (IV) oxide bis(acetylacetonate), trichlorotris(tetrahydrofuran) titanium (III), tris(2,2,6,6-tetramethyl-3,5-heptanedionato) titanium (III), (trimethyl)pentamethyl-cyclopentadienyl titanium (IV), pentamethylcyclopentadienyltitanium trichloride (IV), pentamethylcyclopentadienyltitanium trimethoxide (IV), tetrachlorobis(cyclohexylmercapto) titanium (IV), tetrachlorobis(tetrahydrofuran) titanium (IV), tetrachlorodiamine titanium (IV), tetrakis(diethylamino) titanium (IV), tetrakis(dimethylamino) titanium (IV), bis(t-butylcyclopentadienyl) titanium dichloride, bis(cyclopentadienyl)dicarbonyl titanium (II), bis(cyclopentadienyl) titanium dichloride, bis(ethylcyclopentadienyl) titanium dichloride, bis(pentamethylcyclopentadienyl) titanium dichloride bis(iso-propylcyclopentadienyl)titanium dichloride, tris(2,2,6,6-tetramethyl-3,5-heptanedionato)oxotitanium (IV), chlorotitanium triisopropoxide, cyclopentadienyltitanium trichloride, dichlorobis(2,2,6,6-tetramethyl-3,5-heptanedionato) titanium (IV), dimethylbis(t-butylcyclopentadienyl) titanium (IV), di(isopropoxide)bis(2,2,6,6-tetramethyl-3,5-heptanedionato) titanium (IV), zirconium (IV) n-butoxide, zirconium (IV) t-butoxide, zirconium (IV) ethoxide, zirconium (IV) iso-propoxide, zirconium (IV) n-propoxide, zirconium (IV) acetylacetonate, zirconium (IV) hexafluoroacetylacetonate, zirconium (IV) trifluoroacetylacetonate, tetrakis(diethylamino) zirconium, tetrakis(dimethylamino)zirconium, tetrakis(2,2,6,6-tetramethyl-3,5-heptanedionato) zirconium (IV), zirconium (IV) sulfate tetrahydrate, hafnium (IV) n-butoxide, hafnium (IV) t-butoxide, hafnium (IV) ethoxide, hafnium (IV) iso-propoxide, hafnium (IV) iso-propoxide monoisopropylate, hafnium (IV) acetylacetonate, tetrakis(dimethylamino) hafnium, aluminum n-butoxide, aluminum t-butoxide, aluminum s-butoxide, aluminum ethoxide, aluminum iso-propoxide, aluminum acetylacetonate, aluminum hexafluoroacetylacetonate, aluminum trifluoroacetylacetonate, tris(2,2,6,6-tetramethyl-3,5-heptanedionato) aluminum, and combinations thereof. 
     
     
       6. The composition as set forth in  claim 1 , wherein the organic metal compound is used in an amount of about 1˜about 300 parts by weight based on about 100 parts by weight of the silane-based organic/inorganic hybrid material having a multiple bond. 
     
     
       7. The composition as set forth in  claim 1 , wherein the organic polymer is selected from a group consisting of polyester, polycarbonate, polyvinylalcohol, polyvinylbutyral, polyacetal, polyarylate, polyamide, polyamideimide, polyetherimide, polyphenylene ether, polyphenylene sulfide, polyethersulfone, polyetherketone, polyphthalamide, polyethernitrile, polyethersulfone, polybenzimidazole, polycarbodiimide, polysiloxane, polymethylmethacrylate, polymethacrylamide, nitrile rubber, acryl rubber, polyethylene tetrafluoride, epoxy resin, phenol resin, melamine resin, urea resin, polybutene, polypentene, poly(ethylene-co-propylene), poly(ethylene-co-butene diene), polybutadiene, polyisoprene, poly(ethylene-co-propylene diene), butyl rubber, polymethylpentene, polystyrene, poly(styrene-co-butadiene), hydrogenated poly(styrene-co-butadiene), hydrogenated polyisoprene, hydrogenated polybutadiene, and combinations thereof. 
     
     
       8. The composition as set forth in  claim 1 , wherein the organic polymer is used in an amount of about 0.01˜about 50 parts by weight based on about 100 parts by weight of the silane-based organic/inorganic hybrid material having a multiple bond. 
     
     
       9. The composition as set forth in  claim 1 , further comprising:
 a solvent for dissolving the silane-based organic/inorganic hybrid material having a multiple bond and the one or more organic metal compounds and/or the one or more organic polymers. 
 
     
     
       10. The composition as set forth in  claim 9 , wherein the solvent is an aliphatic hydrocarbon solvent, an aromatic hydrocarbon solvent, a ketone-based solvent, an ether-based solvent, an acetate-based solvent, an alcohol-based solvent, an amide-based solvent, a silicon-based solvent, or a mixture thereof. 
     
     
       11. The composition as set forth in  claim 9 , wherein the solvent is used in an amount of about 100˜about 2000 parts by weight based on about 100 parts by weight of the silane-based organic/inorganic hybrid material having a multiple bond. 
     
     
       12. An organic insulator derived from the composition of  claim 1 . 
     
     
       13. An organic thin film transistor, comprising:
 a substrate, a gate electrode, an insulating layer, an organic semiconductor layer, and a plurality of drain/source electrode pairs, wherein the insulating layer is the organic insulator of  claim 12 . 
 
     
     
       14. An electronic device comprising the organic thin film transistor of  claim 13 . 
     
     
       15. The electronic device as set forth in  claim 14 , wherein the electronic device is a liquid crystal display, a photovoltaic device, an organic light-emitting device, a sensor, memory, or an integrated circuit.